// Copyright 2022 The kubegems.io Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package i18n

import (
	"context"

	"github.com/gin-gonic/gin"
	"golang.org/x/text/language"
)

type CtxLang string

const LANG CtxLang = "lang"

func SetLang(c *gin.Context) {
	var lang language.Tag
	langs, _, err := language.ParseAcceptLanguage(c.GetHeader("Accept-Language"))
	if err != nil {
		lang = defaultLang
	} else {
		lang, _, _ = matcher.Match(langs...)
	}
	lang = lang.Parent()
	ctx := context.WithValue(c.Request.Context(), LANG, lang)
	c.Request = c.Request.WithContext(ctx)
}
